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Q: Multiple problems with the car I just purchased

Hi there. I am so sorry that this has happened to you. The Check Engine Light bulb needs to be replaced so that you know when the system sees a problem; you didn't know that you would fail the emissions...

P0431 means that the catalytic converter operating efficiency is not in the expected range. The converter could be faulty and/or the engine might be operating poorly which in turn will cause converter misoperation. If the converter has failed due to...

Q: running rough, blowing blue smoke then white smoke

Testing and diagnosing will give a technician a good idea of what to expect will be found with internal engine problems, but you can never be totally sure until some disassembly and inspection has been done. Test results leading to...

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While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...